FST Foekema Symmetric Twostroke, new scavening ? Read below !

Read here about the history of FST system and the dubious role of FOS: https://www.kiwibiker.co.nz/forums/sh...

The first FST text was published on 19 january 2008. 2 month later on 16 March 2008 at 20.00hr the first FST engine was started in my home and my wife Hetty did make the video on YouTube. One day later Jan Thiel called me to congratulate me, that was close before he went to Thailand.

21 dec 2022
Till now it's still not a succes. Maily because the new gasses flow directly into the exhaust and pipes become to cool to run at higher rpm.
At this moment it has no use to go on with the same porting. A new idee which should be better wil replace the old one.

Read everything about this new 2t system on my facebook page
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Specification:
Fst Kreidler engine 50cc
5 speed (special)
UitraSap Ignition
30hp at 18.000 rpm (theoretical)

Profile:
I started racing in 1964. Computers were still not there. I did hardly no calculation. With the advent of the computer everything has changed and complicated calculations are no problem any more. All old historical notes were struggling. In the past 15 years I got a number of programs. Beside I did developed many programs myself in Excel. It was my profession to do so for my employer for many years.
In 2003 also began making calculations for third parties. Not everything, but a lot can be calculated very accurately for any twostroke engine. For instance the exhaustpipe can be calculated in almost exactly the correct speed for which the setup and cylinder is optimal. Even by a large kart engines manufacturer (TM) was found to be not entirely correct. With a new calculated combustion chamber and exhaustpipe it was far better then before.
This is also partly due to the information I got from Jan Thiel and was freely available after retiring from Aprilia racing end 2007.
Also the UltraSap ignition developed by my son Raimond was a very important part. The combustion and power are strongly influenced. Read about this subject my note on Facebook

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Sincerely,
Luc